Edge-trimming machine and the like



F. M. FURBER.

EDGE TRIMNHNG MACHINE AND THE LIKE.

APPLICATION FILED APR-25.1916- Patented Oct. 28, 1919.

UNITED STATES PATENT OFFICE.

FREDERICK M. FURBER, OF REVERE, MASSACHUSETTS, AS'SIGNOR, BY MESNE ASSIGN- A CORPORATION OF NEW JERSEY.

MACHINERY CORPORATION, OF PATERSON, NEW JERSEY,

EDGE-TRIMMING MACHIN E AN D THE LIKE. V

Specification of Letters Patent.

Application filed April 25, 1916. Serial No. 93,540.

To all whom it may concern:

Be it known that I, FREDERICK M. FURBER, a citizen of the United States, residing at Revere, in the county of Suffolk and State of Massachusetts, have invented certain Improvements in Edge-Trimmin Machines or the like, of which the followlng description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to machines for use in the manufacture of boots and shoes. The invention is illustrated herein in its application to machines for trimming the edges of shoe soles, but in its broader aspects the invention is more generally applicable to machines for performing various operations, such as trimming, scouring or burnishing, and including various combinations of tools for performing different operations in succession.

The operation of trimming the edges of shoe soles, in order to impart to the edge of the sole its final contour after the attachment of the sole to the shoe, is usually effected by the use of rotary edge trimming cutters. In the foreplaart of /the sole, as shoes are usually made, the edge is shaped substantially straight in transverse contour, with the corners slightly beveled, while in the shank portion, at least on the inner side of the shoe, the edge is usually curved convexly toward the bottom surface of the sole. This necessitates the use of at least two different cutters for trimming respectively the forepart and the shank. On many shoes,

. moreover, particularly of the heavier types, it is frequently desired to trim the shank edge of the sole on the outer side of the substantially straight in transverse like the forepart, while the shank the inner side of the shoe is curved as usual. It is not feasible, however, to use the fore part cutter for trimming in the shank, both for the reason that in order to trim close to the breast of the heel it is desirable to use for shank trimming a cutter of smaller diashoe contour, edge on meter than is used for trimming the forepart and for the further reason that frequently the greater thickness of a sole in the forepart, as compared with the shank, necessitates the use of a wider cutter than can be advantageously employed for properly 'whi oh the trimming the shank edge. As a consequence, it is necessary on some classes of work to use two different cutters for trimming the opposite sides of the dition to the forepart edge trimming cutter, and it has been a matter of considerable difficulty heretofore to arrange the three outters in such manner as to economize space and present them in convenient positions for use without the danger of damage to the shoe or injury to the operator through contact with a cutter other than the one to shoe may be, for the moment, presented.

An important object of this invention is to provide an edge trimming machine having a plurality of cutters so mounted and arranged as to eliminate the above mentioned difficulties hereto-fore encountered. To this end, a feature of the invention consists in an organization comprising shank cutters of different shapes with provision for adjustment to enable the operator to use different cutters at will without danger of interference with a cutter or cutters not in use.

Another important feature of the invention consists in novel means, in a machine for operating on shoes, for effecting automatically positioning movement of a shoe treating tool to cause the tool to be presented in different locations on the machine. This feature of. the invention, in its preferred emshank, in adbodiment, comprises driving means for the tool constructed and arranged, in combination with the tool support, to effect at the will of the operator positioning movement of the tool. The invention also provides novel means for controlling positioning movement of the tool, which constitutes a further feature.

In a further novel aspect the invention provides a plurality of tools with a. novel arrangement of driving connections to permit different tools to be driven alternatively in a selected position.

Another important feature of the invention is a novel organization of a plurality of cutter carrying instrumentalities for operating on different parts of a shoe so arranged as to present their cutters in a minimum number of essentially different operating positions. The operator is thus enabled to perform the entire trimming operation without moving from his seat or injuring the shoe by striking one cutter with it while operating on it with another.

The above and other features of the invention, inluding certain details of construction and combinations of parts, will now be described with reference to the accompanying drawings and pointed out in the claims.

In the drawings,

\Figure 1 shows in front elevation the upper portion of a machine in which the invention is embodied, a portion being broken away in order to illustrate more clearly the interior construction.

Fig. 2 shows the upper portion of the machine in end elevation as viewed from the left with reference to Fig. 1.

Fig. 3 is a view showing in elevation a portion of the machine at its opposite end, with different positions of the parts indicated respectively by full and dotted lines, and

Fig. a is a view in elevation of a portion of the mechanism seen in Fig. 2 with the parts shown in a different position.

The machine includes a forepart edge trimming cutter 2 mounted upon a shaft 4 which is supported in bearings 6 in the ma chine frame 8 and is rotated by a belt 10 which is arranged to be driven from a suitable counter-shaft not seen in the drawings. The usual hand brake 12 is provided in order to enable the operator to stop the rotation of the shaft & quickly when. the belt 10 is disconnected from the source of power.

Below the bearings 6 the frame 8 is provided with a horizontal opening 14: eX- tending in parallel relation. to the shaft i and formed at opposite ends to provide bearings for a cylindrical turret 16 prodded in turn with bearings in which are mounted in parallel relation two shafts 18 and 20 carrying respectively upon their forward ends two shank edge trimming cutters 22 and 24:. The cutter 22 in the construction shown has straight blades for the purpose of forming an edge that is straight in transverse contour, and the cutter 2% has curved blades for the purpose of forming a conveXly curved edge. The turret 16 is provided at its rear end with an overlapping flange 26 which serves to prevent forward movement of the turret in its bearings, while movement of the turret in the opposite direction is prevented by means of an overlapping plate 28 on the forward end of the turret. WVith this construction the turret 16 is rotatable in its bearings in the frame 8 in order to bring either the cutter 22 or the cutter 2 1 into position convenient for use in trimming the edge of a shoe sole. As the parts are shown in Fig. 1, the curved cutter 2 1 is in position to be used for trimming the edge of the shank portion.

ings and to turn the of a sole on the inner side of a shoe, while the straight cutter 22, which is adapted for use in trimming the shank edge on the outer side of the shoe, is in an idle position directly above the cutter 24.

The driving connections for the shank cutters 22 and 2 1 comprise pulleys 30 and 32 on the rear ends of the shafts 18 and 20 respectively and a belt 3% arranged to transmit power from a driving pulley 36 on the rear end of the forepart cutter shaft 4-. The pulley 36 is of greater diameter than the pulleys 30 and 32, and in consequence, as will be seen by reference to Fig. 3, when the tool carrier is in position to permit the use of one of the shank cutters, this cutter alone will be driven by the belt 34, the other shank cutter being idle since its pulley is out of engagement with the belt. The cutter 2, as shown, is of larger diameter than the cutters 22 and 24:, which therefore require to be driven at higher speed than the cutter 2. The relative sizes of the pulleys satisfies this requirement.

It will be apparent that the belt 3 1, in addition to its cutter driving function, will have a constant tendency in operation to overcome the frictional resistance to turning movement of the turret 16 in its bearturret in the same direction as the shaft 1. If the turret were unrestrained, therefore, it would be turned constantly in its bearings, the pulleys 30 and being of the same diameter and equidistant from the aXis of the turret. In order to l lf the turret in position to permit the use of one or the other of the cutters 22 or 2 1, the machine is provided with a pivoted controlling member 38 having a catch -10 arranged for engagement in one or the other of two diametrically opposite notches 12 formed in the periphery of the plate 28. The controlling member 38 is normally held by means of a spring at with the catch -10 in one of the notches 4:2, as shown in Fig. 2, thus retaining the turret in a stationary position. When the controlling member is moved to withdraw the catch 40 from the notch 12 the turret immediately starts to turn in the direction of the arrow, and if the controlling member is immediately released the spring 5% will maintain the catch in engagement with the periphery of the plate 28 and will cause it to enter the diainetrlcally opposite notch and stop the rotation of the turret at the end of a half revolution. In order to increase the certainty of operation of the catch, the plate .28 is cut away at its periphery to provide eccentric surfaces 46 in front of the notches 12, thus leaving a shoulder a? at the rear of each notch projecting outwardly farther than the portion of the plate in front of the notch in position to serve as a stop for engagement with the catch. As additional means for insuring that the turret shall make only a half revolution in case, for example, the operator should continue to hold the member 38 in releasing position, a pair of cams 48 are formed upon the front of the plate 28, and the member 38 is provided with a dog 50 which projects laterally in position to be engaged by these cams. The cams 48 are so positioned in relation to the notches 42 as not to oppose the catch releasing movement of the member 38. When the turret has nearly completed a half revolution, in case the operator continues to press upon the controlling member, one of the cams 48 will engage the projection 50 and swing the controlling member in such manner as to cause the catch 40 to follow closely the eccentric surface 46 and engage the stop 47 as will be seen by reference to Fig. 4. Rotation of the turret will thus be stopped irrespective of the action of the operator and may only be resumed by reason of another depression of the controlling member.

In the use of the machine, in case the shank cutter which it is desired first to use is not already in operative position, the operator depresses the controlling member 38, releasing the catch 40 from the notch 42, and permitting the turret to be turned through the action of the belt 34 until the catch engages in the notch 42 at the other side of the plate 28, thus bringing the desired cutter into position for use. The trlmming of the shank edge at one side of the shoe is then effected, after which the shoe is presented to the cutter 2 to trim the forepart of the sole as far as the shank portlon on the other side of the shoe. After the shank has been trimmed on one side of the shoe, the catch 40 is tripped to permit the other shank cutter to be carried to operative position in readiness to receive the shoe after the trimming of the forepart. EX- perience has demonstrated that the turret will be turned so rapidly that practically no time is lost in reversing the cutters. Since the uppermost cutter is disconnected from the driving means during the use of the lower cutter, danger of injury to the operator or damage to the shoe through accidental engagement with the cutter not in use is eliminated. The position of the forepart cutter with reference to the shank cutters, moreover, is such as to insure further the elimination of all danger of damage or injury in trimming either the forepart or the shank.

While the means for driving the shank cutters in the illustrated construction comprises friction pulleys and a connecting belt, it will be apparent that the essential features of operation of the machine are not dependent upon the use of driving connections of the precise construction shown.

I have, in some of the claims, used the term tool broadly, to designate one of the shafts 18 and 20 together with its attached parts, in other words to designate an element carried in the turret and operated therein. The term tool in the claims should not therefore be restricted to the mechanical equivalents of the cutters 22, alone unless required by the context.

Having described the invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. A machine of the character described comprising a rotary tool-holder, a tool carried by the holder, the tool being movable bodily to and from a predetermined operative position, and means arranged to move the tool to and from said position and to drive it while the tool occupies said position, the tool being arranged to move into and out of co-active driven relation with said means in consequence of being moved bodily thereby. v

2. A machine of the character described comprising a movable tool-support, a plurality of rotatable tools carried thereby, and means arranged to move said support to position said toolssuccessively in a predetermined position and to drive each tool as the latter occupies saidposition, the tools being arranged to move successively into and out of co-active driven relation with said means in consequence of the positioning movement of said support.

3. A machine of the character described comprising a rotary tool and means to support the same, the tool being movable bodily to various positions, and means arranged to drive the tool and to move it to various positions, the tool being arranged to be free of the driving action of said driving means when in one of the positions to which it is moved by the driving means.

4. A machine of the character described comprising a rotary tool-support, a plurality of tools carried thereby and arranged to rotate independently thereof, and a driven belt arranged to drive said tools and to rotate said support in consequence thereof, each of said tools being arranged to move into and out of co-active relation with the belt in consequence'of rotation of the toolsupport.

5. A machine of the class described having, in combination, a rotatable turret, a plurality of wheels rotatable on said turret, a driving belt embracing said wheels, the

wheels being so arranged with reference to the axis of the turret as to cause the turret to turn in response to the drag of the belt, a tool on the turret arranged to be driven from said belt, and means for locking the turret to cause said tool to be presented in a selected position.

6. A machine of the class described having, in combination, a rotatable turret, a plurality of wheels rotatable onsaid turret, a driving belt embracing said Wheels, the wheels being uniform in diameter and spaced equidistantly from the axis of the turret to render the belt effective in any position of the turret with a tendency to turn the turret about its axis, a tool on the turret arranged to be driven from said belt, and means for locking the turret to cause said tool to be presented in different selected positions.

7. A machine of the class described having, in combination, a rotatable turret, a plurality of Wheels rotatable on said turret, a driving belt embracing said wheels, the Wheels being so arranged with reference to the axis of the turret as to cause the turret to turn in response to the drag of the belt, a plurality of tools on the turret arranged to be driven by the respective wheels, and means for locking the turret in different positions to present difierent tools in position'for use.

8. A machine of the class described having, in combination, a rotatable turret, a tool carried by said turret, means for rotating the turret, a controlling member for locking the turret to cause the tool to be presented in different positions, and positive means for operating said controlling member to stop the rotation of the turret as the tool arrives at each successive position.

9. A machine of the class described having, in combination, a rotatable turret, a tool carried by said turret, means for rotating the turret, a controlling member for looking or releasing the turret, said member having a catch and the turret having stops arranged to cooperate with said catch to determine difierent successive positions of the tool, and positive means for operating the controlling member after its release of the turret to insure the engagement of said catch with the next succeeding stop.

10. A machine of the class described having, in combination, a rotatable turret, a tool carried by said turret, means for r0- tating the turret, a controlling member for locking or releasing the turret, said member having a catch and the turret having stops arranged to cooperate with said catch to determine different successive positions of the tool, and cams on the turret arranged to operate said controlling member after its release of the turret to insure the engagement of said catch with the next succeeding stop, said cams being arranged to permit movement of the controlling member to release the turret after the catch has thus engaged.

11. A machine of the class described having, in combination, a rotatable turret, a pair of shafts rotatably mounted in said turret in parallel relation to its axis, a tool on each shaft, a transmission wheel on each shaft, and a belt arranged with reference to said wheels to impart operative movement to the tools While permitting the turret to assume different positions of adjustment about its axis.

12. A machine of the class described having, in combination, a rotatable turret, a pair of shafts rotatably mounted in said turret, a tool on each shaft, a transmission wheel on each shaft, a driving wheel, and a belt embracing said transmission Wheels and driving wheel to impart operative movement to one or the other of said tools according to the adjustment of the turret in either of two positions at intervals of substantially a half revolution, the diameter of the driving Wheel being greater than that of the transmission wheels to cause the belt to drive only one of the tool shafts when the turret is in adjusted position.

13. A sole edge trimming machine having, in combination, a rotatable turret, a pair of cutter shafts mounted in parallel relation in said turret, cutters mounted on said shafts, one of said cutters having straight blades for trimming the shank edge of a shoe sole at the outer side of a shoe and the other cutter having curved blades for trimming the shank edge at the inner side of the shoe, a transmission wheel on each cutter shaft, a driving wheel, and a belt embracing said wheels to impart operative movement to said cutters, said belt and wheels being arranged to permit rotation of the turret to different positions of adjustment.

14. A sole edge trimming machine having, in combination, a forepart edge trimming cutter, means for operating said cutter, a pair of shank edge trimming cutters of different shapes for trimming different portions of the shank edge. said shank cutters being mounted to permit adjustment to enable the operator to use either of said cutters at will, and connections for imparting operative movement to said shank cutters.

15. A sole edge trimming machine having, in combination, a forepart edge tri1nming cutter, means for operating said outter, a pair of shank edge trimming cutters of different shapes for trimming different portions of the shank edge, a turret on which said shank cutters are mounted, said turret being rotatable to present either of said shank cutters in convenient position for use, and driving connections for imparting operative movement to the shank cutters arranged to permit the turret to be turned to different positions of adjustment.

16. A sole edge trimming machine having, in combination, a forepart edge trimming cutter, means for operating said cutter, a pair of shank edge trimming the peripheral speeds cutters of different shapes for trimming different portions of the shank edge, a turret on which said shank cutters are mounted, said turret being rotatable to present either of said shank cutters in convenient for use, means for retaining the turret in adjusted position, and driving connections between said forepart cutter and shank vcutters comprising a pair of transmission wheels on the turret connected with the respective shank cutters and a belt embracing said wheels, the wheels being arranged with reference to the axis of the turret to cause the turret to be turned through the drag of said belt when the turret is released by said retaining means.

17. A sole edge trimming machine having a transmission shaft and a tool carried thereby, a turret carrying a plurality of tool shafts, the turret being rotatable to carry said tool-shaft successively to operative position, rotary tools on the latter shafts, the diameter of said tools being less than that of the first mentioned tool, and transmission means comprising a transmission wheel on the first mentioned shaft, and a transmission wheel of smaller diameter on each of said tool shafts, whereby the former shaft is adapted to drive only one of the latter tools at a time, and whereby of the smaller tools and of the larger tool are approximated.

18. In a machine of the class described, three cutter carrying instrumentalities, and cutters carried by said instrumentalities and constructed to trim different parts of the same shoe, the instrumentalities being constructed and arranged to present their cutters in only two substantially different operating positions.

19. In a machine of the class described, a shoe treating tool arranged to perform an operation on the work, and a plurality of position other shoe treating tools arranged to perform other operations on the work singly at a single predetermined position relatively to the first-mentioned tool.

20. In a machine of the class described, a. shoe treating tool arranged to perform an operation on the work at one station, a second tool constructed and arranged to perform another operation on the work at a second station, and a third tool for performing a third operation, one of said firstnamed tools being shiftable from its operating station and the third tool being shiftable to operate there.

21. In a machine of the class described, three tools for performing difi'erent operations on a shoe, the three tools having two different operative positions only.

22. A machine of the character described comprising a rotary support, a plurality of rotatable members carried by said support, a driving belt arranged to run on said members, the latter being arranged to move successively into and out of engagement with the belt in'consequence of rotation of the support, and a tool connected to one of said members to be operated thereby.

23. A. machine of the character described comprising a tool-shaft, a rotary tool-support, a plurality of rotatable members carried by said tool-support, a belt arranged to run over said tool-shaft and over said members, the latter being arranged to move successively into and out of engagement With the belt in consequence of rotation of the tool-support, and a plurality of tools carried by said tool-support and connected to said members respectively to be operated thereby.

In testimony whereof I have signed my name to this specification.

FREDERICK M. FURBER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

